First time you have to clear about your requirements that what do you want? It may you need (1) 2 desktop on each monitor or you may need (2) single desktop on 2 monitor. For option (1) you need to take help of xcomputing facilities. Its a hardware set where you can plug a keyboard, mouse, monitor and audio device and can be handle by one more user at a time. For option (2) It’s very very simple. If you are using a dual output VGA then just plug 2 monitor in every port. Go to display properties and find the option to extend your view on secondary monitor.

I think you will get the proper solution.

Thanks